We've been over this time and time and time again since February. I hated the trade then but I eventually saw some of the method to Danny's madness. I held my ultimate judgement for the playoffs where it would really matter. The conclusion: I still don't like the trade but I'm not sure if you can really say we'd have won with him still on the team.
Let's get this out of the way: Perkins would not have been the difference in this series. The Heat played multiple smaller lineups that would have left him on the bench in crucial moments and besides, the Celtics got just as much from Jermaine O'Neal as they would have received from Perkins.
With that said, I can't help but wonder what added element Perkins might have brought to the table. It isn't like we traded Jermaine for Perkins, we would have had them both and the Shaq watch would have been a lot less important.
Still, you've heard all the arguments on both sides of the topic. Feel free to state your case one more time (or several if you like). I'm pretty much done with the debate. I didn't like it then and I'm not crazy about it now but I'm not sure how much it would have mattered in the end and we'll never know.